Momentum dependence measurements of the np → pn charge - exchange peak between 1 and 2 GeV/c

The charge exchange reaction dp → (pp)n

“…The charge exchange differential cross section on the deuteron at = 0 will be estimated from our data and compared with the available data for the → reaction at the same energy. The closest energy data comes from measurements made at the SATURN accelerator [16,17]. We would like to add that in an earlier publication [9] our data was compared with that of [18], where the cross section was underestimated.…”

“…The obtained value will be related to the estimated differential cross section of the quasi-elastic → ( ) charge-exchange at = 0 from our experiment. One would like to stress that the systematic error in data by Bizard et al [16] makes 5%. From the kinematical correlation between the polar angle of the nucleon-spectator (in the laboratory frame) and its momentum (in the deuteron rest frame) shown in the Fig.…”

“…In spite of the fact that only the first reaction is examined in this paper, they may be useful to the interested reader. The number of events in the studied channel was converted to a cross section using the total cross section [11] and the total number of events corrected for losses due to the (4) to the → experimental results [16]. The solid curve is a simple exponential fit to the data points.…”

“…2 shows the values of σ / | =0 of the → reaction as a function of the incident momenta. The individual differential cross sections σ / , from Bizard et al [16] in the region of momenta (1 4 − 1 95) GeV/c, at each momentum were extrapolated to = 0 by the expression…”

Measurement of the charge exchange $np\rightarrow pn$ reaction by means of the deuteron beam

“…The obtained charge exchange differential cross section on the deuteron at t = 0 was compared with the available data from np → pn reaction at the same energy. The closest energy data comes from measurements made at the SATURN accelerator [9,10]. The values of dσ /dt| t=0 of np → pn reaction as a function of the incident momenta is shown in Figure 8.…”